The Pacific War - week by week

Last time we spoke about the Mandalay Offensive. In the midst of intense warfare, General Krueger positioned his troops strategically to bolster the assault at Rosario. As the American forces repelled counterattacks and advanced, they faced fierce Japanese resistance, particularly at Binalonan and Hill 600. Despite heavy casualties, the Americans gradually gained ground, clearing key areas and preparing for further offensives. Meanwhile, Japanese defenses were fortified but weakened by shortages. As battles raged, both sides braced for decisive confrontations in the ongoing struggle for control of Luzon. In a fierce battle across the hills of Luzon, the 103rd Regiment aimed to secure key positions but faced heavy resistance, capturing Hill 800 by nightfall. The 172nd Regiment achieved surprise at Hill 900, while other regiments advanced under relentless fire. Meanwhile, in Burma, the British-Indian forces captured Shwebo, pushing deeper against Japanese defenses. The Mars Task Force disrupted supply lines, leading to a Japanese retreat. Amidst the chaos, both sides suffered heavy losses, marking a pivotal moment in the campaign.

This episode is the Return to Bataan

Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945.

By the end of January, as previously noted on Luzon, the 43rd Division had secured most of the Rosario region and Route 3 from Pozorrubio to the crucial junction with Route 11. The 25th Division had successfully eliminated the Shigemi Detachment at San Manuel, while the 6th Division had cleared the Cabaruan Hills and established outposts between Balungao and Guimba. Meanwhile, the 14th Corps had advanced to Clark Field, where it was engaged in a fierce battle with the Kembu Group. By January 27, the 40th Division had breached General Tsukada’s northern defensive line, and the 37th Division had fortified Mabalacat, Angeles, and Runway No. 1 in preparation for the final push toward Manila. On that same day, General Krueger received significant reinforcements, with the arrival of the 1st Cavalry Division, the 32nd Division, and the 112th Cavalry Regiment at Lingayen Gulf. He planned to gather the cavalry division at Guimba to launch a coordinated advance toward the capital along the eastern side of the Central Plains via Route 5. After returning the reserve 35th Regiment to General Mullins, Krueger intended to deploy the 32nd Division, minus the 126th Regiment in Army Reserve, to the San Manuel-Asingan area. This would allow the 25th and 6th Divisions to narrow their fronts and continue south and southeast toward the Licab-Lupao line with reduced risk of exposing the 1st Corps’ flank. Additionally, this strategy would enable the 37th Division to resume its advance toward Manila. However, General Griswold wanted to push Tsukada’s forces further into the Zambales Mountains first, directing General Beightler to assault the enemy’s southern defensive line centered around Fort Stotsenburg, while only the 148th Regiment and the 37th Reconnaissance Troop moved south along Route 3 to San Fernando.

On January 28, the attack commenced as planned, with the 129th Regiment advancing westward through Runway No. 2, but it was quickly halted by the formidable forward defenses of the Eguchi Detachment. Meanwhile, with the assistance of Filipino guerrillas, reconnaissance units from the 37th Division successfully secured the San Fernando bridges intact. To the north of the Bamban River, the 160th Regiment faced unexpectedly light resistance as it moved along its ridge line to capture open-crested Hill 620, although it would later encounter stronger opposition when it reached the main defenses of the Takaya Detachment. At the same time, General Patrick began gathering the 1st and 20th Regiments at Guimba and Victoria, while the 6th Reconnaissance Troop advanced toward Cabanatuan, where they identified a significant Japanese concentration. Further north, the 35th Regiment advanced unopposed to barrio Gonzales, while the 27th Regiment moved overland and successfully dislodged a Japanese outpost from barrio Pemienta.

Meanwhile, MacArthur was planning a secondary landing on the Zambales coast of Luzon, assigning Major-General Charles Hall’s 11th Corps, which included the 38th Division and the 34th Regiment, to land at San Antonio and quickly advance across the base of Bataan to prevent any significant Japanese retreat into the peninsula. He also aimed to divert the Kembu Group’s attention to relieve some pressure on the 14th Corps. However, General Yamashita had no intention of retreating to Bataan and had only dispatched Colonel Nagayoshi Sanenobu’s 39th Regiment to defend the peninsula and the Kembu Group’s right flank. On January 26, Hall’s 11th Corps had departed Leyte Island aboard vessels from Admiral Struble’s Task Group 78.3, heading directly to Luzon for the San Antonio landing, codenamed Operation Mike 7.

The convoy reached its destination on the morning of January 29. After receiving reports from Filipino guerrillas indicating that there were no Japanese forces in the landing area, Struble decided to cancel the planned pre-assault bombardment. Instead, he ordered Hall’s four regiments to land simultaneously across a nearly six-mile stretch of coastline from San Antonio. Upon landing, the 151st Regiment secured San Felipe and San Antonio, while the 149th Regiment quickly moved inland to capture the San Marcelino Airstrip. However, they discovered that guerrillas led by Captain Ramon Magsaysay had already taken control of the airstrip three days prior. Before nightfall, the 34th Regiment and the 24th Reconnaissance Troop advanced south along Route 7 to the northern shore of Subic Bay. To the east, the 160th Regiment made significant progress, advancing nearly two miles southwest and breaching a stronghold at the center of the Takaya Detachment. The 129th Regiment also managed to penetrate enemy defenses into Fort Stotsenburg but was halted at barrio Tacondo by six tanks from the Yanagimoto Detachment. Despite this setback, the inability of the Japanese counterattacks to reclaim lost territory compelled Tsukada to order the Eguchi and Yanagimoto Detachments to retreat to their main line of resistance. Meanwhile, further north, units from the 1st and 20th Regiments successfully captured Licab and Talavera, cutting off the road between Cabanatuan and Muñoz. The 27th Regiment engaged a small tank-artillery force from the 2nd Tank Division that had become trapped along the highway between Gonzales and Pemienta.

With the rapid advances of the 6th and 25th Divisions, the 2nd Tank Division main strength in the Tayug-Triangle Hill area was in danger of being cut off from its sole remaining escape route into the northern bastion via San Jose and Highway 5. To meet the new situation, General Iwanaka was directed to pull back all remaining division strength from the Tayug-Umingan and Triangle Hill sectors with the exception of small outpost forces to be left at Gonzales and Umingan to delay an enemy advance from the northwest. The division was instead to concentrate the bulk of its forces in a triangular-shaped area bounded by Lupao, Muñoz and Rizal. These new dispositions had barely been effected when enemy elements swept around the outpost force at Gonzales and cut its withdrawal route to Umingan, forcing the detachment to withdraw through the hills after destroying most of its tanks and all of its mechanized artillery. From 20:00 on the 29th until 04:30 the next morning the force tried unsuccessfully to break through the Pemienta perimeter, against a sharp enemy. By the time the action had ended the 27th Regiment had killed 125 Japanese and had destroyed 8 tanks, 8 artillery prime movers, 4 tractors, 8 105-mm howitzers and 5 trucks, while only losing about 15 men killed and 45 wounded. Only four tanks succeeded in breaking through the enemy encirclement and escaped along the highway to Umingan. The next day, the 27th Regiment began positioning itself to attack Umingan from the north and northwest, while the 35th Regiment started preparations for a holding attack from the west and southwest.

In an effort to avert the mass execution of prisoners of war at Cabanatuan, Lieutenant-Colonel Henry Mucci led a contingent of approximately 233 men, composed of Filipino guerrillas, soldiers from the Alamo Scouts, and Mucci’s 6th Ranger Battalion. They traversed 30 miles cross-country between January 28 and 30 to liberate 522 weakened prisoners during the night. Most of the prisoners had vacated the camp by 2010 hours. Rangers and guerrillas had to carry most, piggy-backing them or making hasty litters from rifles and shirts. It was 2 miles to the Pampanga River, where carts waited to take them to Platero to be treated, fed, and organized. Many were still in shock and had not yet fully understood that they were free. At 2040 hours, Capt Prince was at the Pampanga River supervising the loading of stumbling prisoners into 25 carts as Rangers and prisoners trickled in. The rest of the Scouts established an ambush at the crossing site. At 2045 hours, one hour after the raid was launched, Prince fired the third red flare and departed for Balangkare. The loaded carabao carts were ordered on their way to Balangkare at 2145 hours.

Meanwhile Major Robert Lapham’s guerrilla forces provided cover for their escape, successfully returning them to Allied lines on January 31. During this operation, around 270 Japanese soldiers were killed at the camp, with an additional 900 casualties along the Cabu River. Over 270 Japanese lay dead or dying in the smoldering camp; most of the wounded dying by dawn as no aid was forthcoming. Japanese bodies were literally stacked at the Cabu bridge and scores more littered the riverside woods. The 359th Battalion had ceased to exist. In the morning, battalion commander Capt Oyanu was still alive, but most of his officers were dead. Only 255 men of 1,200 survived and most were wounded.

In contrast, the Americans suffered only 2 fatalities and 7 wounded, along with 12 wounded Filipinos and 2 dead prisoners. Fortunately, the anticipated retaliation against the Filipino population did not occur, as the Japanese retreated from the area within a day of the raid, while the 20th Regiment secured the road junction barrio of Baloc and began advancing toward Muñoz. On January 30, Griswold continued his vigorous offensive against Clark Field; the 129th Regiment cleared the hills near Dolores and took control of the abandoned Fort Stotsenburg area, while the 160th Regiment made only 500 yards of progress against the determined Takaya Detachment. The 108th Regiment finally captured Hill 5 and Thrall Hill. Further south, patrols from the 37th Division reached within a mile of Calumpit and the Pampanga River, and on Bataan, the 34th Regiment took Olongapo after a fierce skirmish, while the 2nd Battalion of the 151st Regiment captured Grande Island at the entrance to Subic Bay.

At the same time, MacArthur was strategizing another secondary landing on Luzon, this time utilizing General Swing’s 11th Airborne Division to assault Nasugbu, located 45 miles southwest of Manila. With this operation, MacArthur aimed to initiate a southern advance toward Manila while simultaneously hindering Japanese forces in southern Luzon from moving north to challenge Krueger’s main offensive. General Eichelberger intended to deploy the 187th and 188th Glider Regiments and advance them approximately twenty miles along Route 17 to Tagaytay Ridge. There, the 511th Parachute Regiment would conduct an airdrop to secure the ridge for the ground troops and capture adjacent sections of Route 17 before the Japanese could regroup to defend the highway. In opposition, General Yokoyama had assigned only the Fuji Force to defend the area south of Manila. This force, centered around Colonel Fujishige Masatoshi’s reinforced 17th Regiment, had only deployed the 3rd Battalion of the 31st Regiment in the Tagaytay Ridge region, with a small outpost at Nasugbu and its main defenses positioned on Mounts Cariliao and Batulao. At this stage, Yokoyama was nearing completion of the organization of the diverse Shimbu Group forces east of Manila into a cohesive combat task force. To the north, near Ipo, he had stationed the Kawashima Force, which was composed of the 82nd Brigade and the 31st Regiment. To the south, the main contingent of the former Manila Defense Force had been relocated from the Philippine capital and renamed the Kobayashi Force, guarding the Wawa-Montalban area. However, the departure of General Tsuda’s 105th Division to the northern stronghold had created a significant gap in the Shimbu Group’s defenses. Although Yokoyama intended to address this vulnerability with the Noguchi Detachment, Major-General Noguchi Susumu's troops were still in the midst of a lengthy march from the Bicol Peninsula by the end of January.

As a temporary solution, the Okita Detachment, a composite force consisting of five battalions centered around the 186th Independent Battalion, and the Kuromiya Detachment, a three-battalion unit based on the 181st Independent Battalion, were deployed in the Bosoboso-Antipolo region. Meanwhile, the Kogure Detachment, organized around the 1st Surface Raiding Base Force, was stationed at Lamon Bay. Manila was entrusted to Rear-Admiral Iwabuchi Sanji’s Manila Naval Defense Force, which included approximately 13,700 naval personnel from the 31st Special Base Force responsible for defending the islands of Manila Bay and the capital, along with some Army reinforcements.

On January 27, Swing’s 11th Airborne Division departed from Leyte Island aboard ships from Admiral Fechteler’s Task Group 78.2, heading directly to Nasugbu Bay to carry out Operation Mike 6. Following an uneventful journey and a brief preliminary bombardment on January 31, the 188th Glider Regiment successfully landed with minimal resistance and quickly advanced inland toward the Palico River, aiming for the section of Route 17 that leads to Tagaytay Ridge. Pleased with the initial landing, Swing subsequently deployed the 187th Glider Regiment and the division artillery, which began to relieve the rear elements of the 188th by midday. At the same time, the majority of the 188th secured the Palico bridge and crossed the river to reach Route 17.

Further north, under pressure from MacArthur and Krueger, the 148th Regiment successfully crossed the Pampanga River and captured Calumpit, just as Beightler was dispatching the 145th Regiment along Route 3 to assist in the advance toward Manila. At Clark Field, the 108th Regiment was patrolling forward, while the 160th Regiment faced challenges in breaking through enemy defenses. Meanwhile, the 129th Regiment launched an attack on the main positions of the Eguchi Detachment at Top of the World hill, successfully securing its steep, grassy southern and southeastern slopes.

On Bataan, General Jones sent the 152nd Regiment to travel through Olongapo and advance east along Route 7, while the 149th Regiment moved east toward Dinalupihan via a challenging trail located about 1,200 yards north of the highway. By the end of January, the 32nd Division had successfully taken control of the recently vacated Tayug area. The 6th and 25th Divisions reorganized in preparation for their final push towards San Jose, and the 1st Cavalry Division gathered at Guimba. The World War II brigade structure of Maj. Gen. Verne D. Mudge's dismounted 1st Cavalry Division differed greatly from that of the triangular infantry division of the period. Instead of three infantry regiments the 1st Cavalry Division had four cavalry regiments--the 5th and 12th in the 1st Cavalry Brigade, the 7th and 8th in the 2d Cavalry Brigade. Each regiment had two cavalry squadrons, each smaller than an infantry battalion, as opposed to the three battalions of an infantry regiment. Each cavalry regiment contained a weapons troop armed with 81-mm. mortars, .30-caliber and .50-caliber machine guns, and bazookas, but there was no heavy weapons troop within each squadron. The cavalry regiments lacked the antitank and cannon companies of an infantry regiment. 1st Cavalry Division Artillery was composed of one 75-mm. howitzer battalion, three 105-mm. howitzer battalions, and, for obvious reasons, an attached 155-mm. howitzer battalion. Reinforcing combat and service attachments brought the division's strength up to nearly 15,000 men, somewhat less than the strength of the reinforced 37th Division at the same time. On paper, each of the four cavalry regiments numbered 1,750 men--in contrast to the 3,000-odd of an infantry regiment--but none of the 1st Cavalry Division's regiments was up to strength. The division had received few replacements since entering combat on Leyte in October, and it had come to Luzon after very little rest from its arduous campaign through Leyte's mountains.

The 1st Cavalry division was ready to advance towards Cabanatuan as General Mudge dispatched two reinforced motorized squadrons. On February 1, the Flying Columns, led by General Chase, crossed the Pampanga River and began their southern march with minimal resistance. As a result, Cabanatuan and Gapan were quickly captured, although some opposition was encountered south of the Peñaranda River. Meanwhile, the 188th Glider Regiment continued its advance towards Tagaytay Ridge, facing heavy enemy fire from Mount Cariliao but still managing to secure the important Mount Aiming. The 148th Regiment swiftly moved down Route 3 and captured Malolos with little resistance. However, the 152nd Regiment faced increasingly strong resistance at ZigZag Pass.

While more rugged terrain than the ZigZag Pass area is to be found on Luzon, few pieces of ground combine to the same degree both roughness and dense jungle. Route 7 twists violently through the pass, following a line of least terrain resistance that wild pigs must originally have established. The jungle flora in the region is so thick that one can step 5 yards off the highway and not be able to see the road. The Japanese had honeycombed every hill and knoll at the ZigZag with foxholes linked by tunnels or trenches; at particularly advantageous points they had constructed strongpoints centered on log and dirt pillboxes. All the defenses were well camouflaged, for rich jungle foliage covered most positions, indicating that many had been prepared with great care and had been constructed well before Colonel Nagayoshi's 39th Regiment had reached the area in December. Colonel Nagayoshi had plenty of food and ammunition for a prolonged stand, and he also possessed numerous mortars and machine-guns. His artillery, however, was inadequate for the task at hand and he lacked certain types of medical supplies, especially malaria preventatives and cures. He had so scattered his mortars and artillery in order to protect them against American artillery and air strikes that his troops would often have difficulty massing their fires. Finally, his defensive line was scarcely 2000 yards wide northwest to southeast, thus rendering his whole position susceptible to vigorous outflanking maneuvers. On the other hand, he had good troops, well-prepared positions, and excellent defensive terrain.

The 129th Regiment secured the summit of Top of the World hill, effectively ensuring Clark Field's protection from all but long-range artillery fire. The 20th Regiment launched its initial attack on Muñoz, which was thwarted by Colonel Ida Kumpei’s tanks fortified as pillboxes. Additionally, the 27th Regiment attempted to advance towards Umingan but was unable to break through, while elements of the 35th Regiment bypassed this area and occupied barrio San Roque.

February 2 mirrored the previous day in the San Jose sector, as the 20th and 27th Regiments continued their battle against the determined Japanese defenders. Meanwhile, Mullins dispatched the 35th Regiment in a two-pronged maneuver towards Umingan, successfully clearing most of the town by noon. In an effort to recover lost time, Mullins then directed the 35th toward Lupao in the afternoon, but its leading battalion was ultimately halted by intense Japanese artillery, mortar, and machine-gun fire. With their forward units stalled at Muñoz and Lupao, Patrick and Mullins resorted to flanking tactics. Accordingly, Patrick sent the 1st Regiment along the Talavera River to attack San Jose from the southeast, while the 63rd Regiment attempted to bypass Muñoz to the east and rejoin Route 5 north of the town. In turn, Mullins ordered the 161st Regiment to move cross-country to positions on Route 99 south of Lupao, then advance to Route 8 between San Isidro and San Jose while the 35th surrounded and cleared Lupao. However, on this day, the 105th Division successfully evacuated San Jose along with its stockpiled ammunition, regrouping north at Puncan and rendering the entire San Jose offensive ineffective. Simultaneously, Chase’s Flying Columns passed through Gapan and entered Sabang, fording the Angat River to launch two simultaneous advances to the south and east. The 148th Regiment secured Plaridel after a brief but fierce skirmish, while the 152nd Regiment faced setbacks in the ZigZag Pass due to nighttime Japanese counterattacks and artillery fire. The 149th Regiment became disoriented and had to return to Olongapo, and the 188th Glider Regiment managed to break through to barrio Aga amidst heavy resistance, while the 1st Battalion of the 187th Glider Regiment moved forward to begin the assault toward Tagaytay.

On February 3, Swing’s glider infantry launched an assault on the western end of Tagaytay, while paratroopers from the 511th Parachute Regiment began to drop along the ridge in a rather scattered manner. The first echelon of the 511th, about 915 in all, had come to Tagaytay Ridge aboard 48 C-47 aircraft of the 317th Troop Carrier Group. The planes had flown north from Mindoro to approach Tagaytay Ridge from the northeast in order to avoid fire from Japanese anti-aircraft weapons west of the drop zone. The first 18 planes, carrying about 345 troops, dropped over the assigned area. At this juncture, planes from succeeding flights were nearly 6 miles and 3 minutes behind the lead aircraft. About 08:20 one of these later planes dumped out a couple of bundles of supplies. Taking this as a signal that they were over the proper drop zone, 'troopers of the succeeding 30 planes began jumping. Aircraft pilots, realizing they had not yet reached the proper point, attempted to halt the jumping, but the 511th's jump-masters continued sending the paratroopers out. Most of them landed almost 5 miles east-northeast of the assigned drop zone. A second group of 51 C-47s began approaching the drop area about 12:10. Some 80 men from the first 5 aircraft of this group landed in the proper place. The rest started out of their planes when they saw on the ground the collapsed chutes of the first misplaced jump. In the end, only 425 men landed on the assigned drop zone; the others, about 1325 in all, made scattered landings 4.5 to 6 miles to the east and northeast. The 11th Airborne Division, blaming the 317th Troop Carrier Group for the premature dropping, reported that the "true reason was the refusal of the Air Force to cooperate in a combined training program for Airborne and Air Force troops." In any event, it appears that some lack of jump discipline within the 511th contributed to the scattered, premature jumping.

Fortunately for them, they encountered minimal resistance as they secured the unoccupied ridge. To the north, the 148th Regiment continued its advance southward, facing delays at several tidal streams that were unbridged and unfordable, but managed to reach a point two miles south of Marilao by day’s end. At the same time, the 5th Cavalry’s Flying Column destroyed a Japanese outpost at Angat and moved through the guerrilla-held Norzagaray before crossing the Santa Maria River to join the 8th Cavalry’s Flying Column, which had already progressed to Talipapa and was nearing the outskirts of Manila. Meanwhile, the 27th Regiment successfully eliminated the remaining enemy pockets at Umingan; the 3rd Battalion of the 35th Regiment, advancing over elevated terrain northeast of Lupao, established a position on Route 8 approximately 1500 yards southeast of Lupao, while the rest of the regiment continued to launch unsuccessful frontal assaults on the town. The 20th Regiment managed to overrun a few Japanese strongholds at Muñoz but was unable to break through.

On 3 February the 2d Battalion, 20th Infantry, moved in on the northwest, but could not reach Route 99 in its sector. The 3d Battalion pushed across that road at the southwest corner of Muñoz, but gained only half a block into the main section of the town. The 1st Battalion, on the south side of Muñoz, made negligible progress. By dusk, the 20th Infantry had overrun a few Japanese strongpoints, but in order to hold its gains had had to destroy completely and physically occupy every position it had reached so far. Muñoz, General Patrick had begun to realize, was going to be a costly, hard, and time-consuming nut to crack. The 20th Infantry had not yet closed with the main Japanese defenses, but had spent most of the last three days pinned down by Japanese artillery, tank, and machine gun fire. Only by hugging the ground and taking advantage of the little cover even shattered tree stumps afforded had the regiment kept its casualties down to 15 men killed and 90 wounded. Meanwhile the 63rd Regiment successfully bypassed Muñoz and advanced up Route 5 toward Caanawan; and the 1st Regiment similarly advanced along the San Jose-Rizal road, assembling at two points 1000 yards south and 1500 yards east of San Jose. Now, however, it is time to leave Luzon and head toward the Central Pacific.

Following the successful capture of the Marianas and the establishment of B-29 Superfortress air bases on these islands, the Allies were finally able to conclude Operation Matterhorn and cease using bases in China and India for conducting raids on the Japanese mainland and other targets in East Asia. Between June 5, 1944, and January 17, 1945, General LeMay’s 20th Bomber Command executed a total of 29 combat missions, inflicting significant damage on key military installations in southern Japan, Manchuria, Formosa, and Indochina, with a total loss of 73 B-29s. Meanwhile, General Hansell’s 21st Bomber Command, reinforced by the 313th Bombardment Wing, struggled to achieve similar outcomes in both daylight precision bombing and area incendiary bombing, with the first three missions of January yielding the same disappointing results as those in December and November.

On January 3rd, Norstad's incendiary test mission was run on 3 January, when ninety-seven B-29's got off for Nagoya. Each plane carried a mixed load of bombs -14 x 350-pound M18 IB clusters fuzed to open at 8,000 feet and one 420-pound fragmentation cluster fuzed to open 1,000 feet below releasing altitude. What with aborts and planes straying from course, only fifty-seven bombed the urban area designated as primary target, most of them releasing visually though cloud cover was rated as 6/10. Some fires were started but there was no holocaust. Smoke rising to 20,000 feet combined with cloud to make observation of results impossible for the attackers. As a test, then, the mission was inconclusive. To the citizens of Nagoya, who were better informed than intelligence officers of 21st Bomber Command, the damage seemed slight. On January 9th, having satisfied Norstad's requirement, the command returned to its program of precision bombing against aircraft factories. Performance for the most part was of a piece with what had gone before. On 9 January 1945 seventy-two B-29's were sent against Musashino near Tokyo. High winds broke up the formations so that only eighteen planes were able to bomb the target; twenty-four bombs, widely scattered in the plant area, destroyed one warehouse and damaged two others-a slight return for the effort expended and the six B-29's lost. On January 14th, at the Mitsubishi Aircraft Works at Nagoya on the 14th, precision bombing was again less than precise. Seventy-three B-29's were airborne and forty bombed, getting four GP's-one ton-into the No. 5 Works area and damaging three buildings.

Frustrated by this, Hansell increasingly blamed his crews for the unsatisfactory outcomes. Remarkably, he would only achieve his first fully successful B-29 attack on his final mission of the war. The target for the January 19 strike was virgin, a plant of the Kawasaki Aircraft Industries Company located 2 miles northwest of Akashi, a village on the Inland Sea some 12 miles west of Kobe. The Akashi works housed Kawasaki's general headquarters and one of the company's two large production units, which built the twin-engine fighters Nick and Randy and engines for Tony, Oscar and Frank fighters. Smaller than Nakajima and Mitsubishi, Kawasaki in 1944 delivered 17% of Japan's combat airframes and 12% of its combat engines. Against Akashi, Hansell sent 77 B-29s, plus 3 others in a diversionary strike. With good weather, 62 bulled it through to the Kawasaki factory, dumped 155 tons of GPs, and then returned with no losses. Interpreting strike photos, intelligence officers estimated that 38% of the roofed area showed major damage. This was an understatement. Every important building in both the engine and airframe branches had been hit and production was cut by 90%. Indeed, the Kawasaki Company liquidated the combined plant and dispersed the machine tools, which had suffered only slightly, to other sites. The Akashi shops were given temporary repairs at the cost of 226 tons of critical materials and over 9000000 yen, but the installation was used thereafter only for limited assembly jobs. It is a pity that the full results of this mission could not have been known to Hansell. His first completely successful B-29 attack, Akashi seemed to epitomize the doctrines of precision bombardment he had championed-and it was his last strike of the war. Unaware of this success, Hansell was replaced the following day as head of the 21st Bomber Command by the determined LeMay, who immediately suggested a shift to firebombing Japan's major cities at low altitude during nighttime, marking a stark departure from Hansell’s previous strategies. However, the only obstacle in the flight path was Iwo Jima, which could alert the Japanese to an impending raid and still had operational airfields capable of launching intercepting fighters. These airfields had also been used for sporadic air assaults on the Marianas, although few attacks were actually carried out in January.

Capturing Iwo Jima would resolve these issues, and Admiral Nimitz aimed to establish emergency landing facilities for B-29s based in Saipan, as well as a base for their fighter escorts targeting Japan. Consequently, he decided to proceed with the invasion, codenamed Operation Detachment. After this operation, Nimitz planned to invade Okinawa to secure and develop a robust air and naval base for the assault on the Japanese home islands, which we will discuss further later. For the Iwo Jima operation, Admiral Spruance was once again given overall command of the "big blue fleet," which was re-designated as the 5th Fleet. Under his command, Vice-Admiral Richmond Turner led Task Force 51, the Joint Expeditionary Force, responsible for landing Lieutenant-General Holland Smith’s Expeditionary Troops. Turner was supported by Rear-Admiral William Blandy’s Task Force 52, the Amphibious Support Force, which included ten escort carriers; Rear-Admiral Harry Hill’s Task Force 53, comprising all transports and landing craft; Rear-Admiral Bertram Rodgers’ Task Force 54, which had six battleships and five cruisers for shore bombardment; and Vice-Admiral Marc Mitscher’s Task Force 58, the Fast Carrier Force. For the amphibious invasion, Major-General Harry Schmidt’s 5th Amphibious Corps would deploy the 3rd, 4th, and 5th Marine Divisions, planning to land the 4th and 5th Divisions side by side with two regiments each along the two-mile stretch of beach between Mount Suribachi and the East Boat Basin on the island's southeast coast. Smith and Schmidt also decided to limit corps artillery to two battalions of 155mm howitzers, organized as the 1st Provisional Field Artillery Group, due to the limited space available for emplacements on the island.

After landing, Major-General Clifton Cates’ 4th Marine Division would take control of the Motoyama Plateau and its airfields, while also capturing the O-1 Line on the corps’ right flank. Meanwhile, Major-General Keller Rockey’s 5th Marine Division would secure the Mount Suribachi region before advancing northeast to capture the O-1 Line on the corps’ left flank. They would then push forward across the island until Iwo Jima was fully secured. At the same time, Major-General Graves Erskine’s 3rd Marine Division would remain in reserve, with only its 21st Marine Regiment deployed as the corps reserve. To aid in this effort, the 7th Air Force, under Generals Harmon and Hale, had been consistently targeting Iwo Jima’s facilities since August 1944. Following intense attacks in December, which included bombardments by Rear-Admiral Allan Smith’s 5th Cruiser Division against Iwo Jima, Haha Jima, and Chichi Jima were again struck on January 5, but the next bombardment wouldn’t occur until January 25.

A fighter sweep by 28 P-38s opened the attack at 0945; 62 B-29s bombed at 1100 and 102 B-24s at noon; Crudiv 5 (Rear Admiral Allan E. Smith), comprising heavy cruisers Chester, Pensecola and Salt Lake City with six destroyers, arrived off Iwo at 1330 and opened bombardment at 1347. "Hoke" Smith approached the island from the west, rounded Mount Suribachi and then reversed track in a half-circle. Unfortunately the sky was so heavily overcast as to force the planes to bomb by radar and to hamper ships' spotting. Surface visibility was good enough to enable the island to be well covered by a naval bombardment, which lasted for 70 minutes and expended 1500 rounds of 8-inch and 5334 rounds of 5-inch shell. The bombers dropped 814 tons of bombs. Photographs, taken three days later, showed that both airfields on Iwo were wholly or in part operational, but no more enemy air raids hit the Marianas until Christmas Day. The job of keeping Iwo airfields neutralized was now turned over to B-24s of VII A.A.F. Between 8 December 1944 and 15 February 1945 they flew at least one strike daily over the island. The day before Christmas, Rear Admiral Smith's heavy cruisers, together with five destroyers, delivered a second bombardment, coordinated with a B-24 strike. This strike was slightly more eventful than the initial one in December, but even less effective. The bombardment, which expended 1500 rounds of 8-inch, provoked return fire from a 6-inch coast defense battery (designated "Kitty" on the target maps) in the northeast part of the island, but "Kitty's" claws managed to strike no closer than 200 yards. As proof of the slight damage inflicted by this bombardment, the Japanese were able to pay a vicious return visit to Saipan on Christmas Eve, a raid of 25 planes which destroyed one B-29 and damaged three more beyond repair.

Crudiv 5 returned 27 December for a repeat performance, lighter than the others; and a fourth bombardment was set up for 5 January 1945. While fighter planes and B-24s hit Iwo Jima the same cruisers and six destroyers bombarded Chichi Jima, 145 northward, and the slightly nearer Haha Jima. Their hope was to catch a convoy bringing Japanese supplies to these islands, whence they were forwarded to Iwo by small craft at night. Destroyer Fanning, steaming ahead of the group as radar picket, encountered at 0206 a surface target, later identified as LSV-102, which she sank. At 0700 Admiral Smith's group opened a one hour and 49 minutes' bombardment of Chichi Jima. During it, destroyer David W. Taylor suffered an underwater explosion, probably from a mine, which flooded her forward magazine. The Haha Jima bombardment by Salt Lake City and two destroyers lasted for an hour. Crudiv 5 then pounded Iwo Jima for another hour and three quarters. The reply was negligible, and a few aircraft which made passes at the cruisers were easily driven off.

Starting on the last day of January and continuing for two weeks, 7th Air Force aircraft bombed the island day and night, occasionally joined by LeMay’s Superfortresses. For ten weeks, Iwo Jima faced near-daily bombardments from land-based aircraft, with nearly 6,800 tons of bombs dropped. Additionally, there were five naval bombardments that fired 203 rounds of 16-inch shells, 6,472 rounds of 8-inch shells, and 15,251 rounds of 5-inch shells. Under normal circumstances, such a heavy and sustained bombardment would have been more than enough to devastate an island of that size. However, the Japanese managed to restore the airfields on Iwo Jima just hours after each attack and continued to strengthen their defenses on the island.

Following the fall of Saipan, the Japanese appointed Lieutenant-General Kuribayashi Tadamichi to oversee the defenses of the Bonin Islands, renaming the Ogasawara District Group as the 109th Division. Kuribayashi stationed Major-General Tachibana Yoshio’s 1st Mixed Brigade and most of Colonel Iida Yusuke’s 17th Independent Mixed Regiment on Chichi Jima, along with several other units across the islands. He accurately predicted that Iwo Jima would be the target for an Allied landing and took measures to make it virtually indestructible. To this end, he coordinated with Major-General Senda Sadasue’s 2nd Mixed Brigade, Colonel Ikeda Masuo’s 145th Regiment, and Lieutenant-Colonel Baron Nishi Takeishi’s severely weakened 26th Tank Regiment, which had sustained heavy losses from American submarines at sea. Additionally, Major Fujiwara Tamachi’s 3rd Battalion of the 17th Independent Mixed Regiment and a robust artillery unit led by Colonel Kaido Chosaku were included in the defense. Rear-Admiral Ichimaru Toshinosuke also provided a significant naval garrison on the island, centered around the 27th Air Flotilla, bringing Kuribayashi’s total forces to approximately 21,060 men, far exceeding the American estimate of 13,000. Aware that the beaches would be vulnerable to enemy naval and air assaults, Kuribayashi opted to strengthen the Mount Suribachi and Motoyama Plateau areas.

The Mount Suribachi area was made a semi-independent defense sector, its heavily fortified positions bristling with weapons of all types, ranging from casemated coast-defense guns and artillery to automatic weapons emplaced in mutually supporting pillboxes. The narrow isthmus connecting Suribachi to the rest of the island was lightly held by infantry, but heavily defended by enfilade fire from artillery, rockets, and mortars emplaced on both the high ground in the south (Suribachi area) and the northern portion of the island. The main defense line was a belt of mutually supporting positions organized in depth, running generally northwest-southeast across the island. It stretched from the cliffs north of the western beaches south to include Airfield Number 2; then, turning eastward through Minami, terminated at the rugged coast north of the eastern beaches. Pillboxes, blockhouses, bunkers, and dug-in tanks strengthened the defenses in the naturally formidable terrain everywhere throughout this belt. The second defense line generally bisected the remaining area in the northern portion of the island. It began several hundred yards below Kitano Point on the northwest coast, cut through Airfield Number 3 and the Motoyama area in the center, and terminated between Tachiiwa Point and the East Boat Basin on the eastern coast. Man-made emplacements were not as numerous in this second line, but natural caves and other covered positions afforded by the fantastically rugged terrain were skillfully organized for the defense. The beaches would be lightly defended but would receive fire support from the elevated positions. A substantial reserve force, including tanks, was also prepared to counterattack and push the Americans back into the sea if they managed to establish a foothold. In a shift from traditional Japanese defensive strategies, Kuribayashi moved away from full-scale counterattacks and suicidal banzai charges, instead instructing his troops to hold their mutually supportive positions to the last and to carry out small unit counterattacks at cutoff points.

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The Allied forces continued their advance through Luzon, battling Japanese defenses, liberating prisoners, and securing key locations, paving the way for a final push toward Manila. Meanwhile, on Iwo Jima, General Kuribayashi was preparing for a final stand, hoping beyond hope to make the Americans pay so dearly they might end the war.